Lila Perry, like her other Hillsboro, Missouri high school students, wanted to use the school bathrooms and locker rooms. So the school told her: Go ahead and use the women’s rooms.

Except that Lila Perry is a transgender student, and the school’s action led to a protest on Monday staged by students, many of whom walked out of the school in protest. And some, it turns out, walked out in support of Lila.

“I think we can all agree that changing in the locker room or going to the restroom are very private activities,” said parent Derrick Good.